diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java
index 1df9f9be7..d0b8e6505 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012 the original author or authors.
+ * Copyright 2011-2013 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -214,7 +214,11 @@ public class QueryMapper {
 	 */
 	private String determineKey(String key, MongoPersistentEntity<?> entity) {
 
-		if (entity == null && DEFAULT_ID_NAMES.contains(key)) {
+		if (entity == null) {
+			return key;
+		}
+
+		if (!entity.hasIdProperty() && DEFAULT_ID_NAMES.contains(key)) {
 			return "_id";
 		}
 
diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoMappingContext.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoMappingContext.java
index de5cc1a85..a4b9b1a7a 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoMappingContext.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/MongoMappingContext.java
@@ -17,6 +17,7 @@ package org.springframework.data.mongodb.core.mapping;
 
 import java.beans.PropertyDescriptor;
 import java.lang.reflect.Field;
+import java.util.HashMap;
 
 import org.springframework.beans.BeansException;
 import org.springframework.context.ApplicationContext;
@@ -51,7 +52,7 @@ public class MongoMappingContext extends AbstractMappingContext<BasicMongoPersis
 	 */
 	@Override
 	protected boolean shouldCreatePersistentEntityFor(TypeInformation<?> type) {
-		return !MongoSimpleTypes.HOLDER.isSimpleType(type.getType());
+		return !MongoSimpleTypes.HOLDER.isSimpleType(type.getType()) && !type.getType().equals(HashMap.class);
 	}
 
 	/*
diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateTests.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateTests.java
index bc650e603..0bebcd891 100644
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateTests.java
@@ -1517,6 +1517,22 @@ public class MongoTemplateTests {
 		template.save(person);
 	}
 
+	/**
+	 * @see DATAMONGO-629
+	 */
+	@Test
+	public void countAndFindWithoutTypeInformation() {
+
+		Person person = new Person();
+		template.save(person);
+
+		Query query = query(where("_id").is(person.getId()));
+		String collectionName = template.getCollectionName(Person.class);
+
+		assertThat(template.find(query, HashMap.class, collectionName), hasSize(1));
+		assertThat(template.count(query, collectionName), is(1L));
+	}
+
 	static class MyId {
 
 		String first;
diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/QueryMapperUnitTests.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/QueryMapperUnitTests.java
index 7c0f44525..742869326 100644
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/QueryMapperUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/QueryMapperUnitTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012 the original author or authors.
+ * Copyright 2011-2013 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -347,6 +347,22 @@ public class QueryMapperUnitTests {
 		assertThat(object.get("reference"), is(nullValue()));
 	}
 
+	/**
+	 * @see DATAMONGO-629
+	 */
+	@Test
+	public void doesNotMapIdIfNoEntityMetadataAvailable() {
+
+		String id = new ObjectId().toString();
+		Query query = query(where("id").is(id));
+
+		DBObject object = mapper.getMappedObject(query.getQueryObject(), null);
+
+		assertThat(object.containsField("id"), is(true));
+		assertThat(object.get("id"), is((Object) id));
+		assertThat(object.containsField("_id"), is(false));
+	}
+
 	class IdWrapper {
 		Object id;
 	}